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erastovalidia [21]
3 years ago
7

42. How many solutions does this system of

Mathematics
2 answers:
uysha [10]3 years ago
6 0

Answer:

\Large \boxed{\mathrm{A) \ 0  }}

Step-by-step explanation:

3x + 4y = 7

-3x - 4y = 7

Add both equations.

0x + 0y = 14

0 = 14

There are no solutions.

Naddik [55]3 years ago
3 0

Answer:

A) 0

Step-by-step explanation:

Adding both equations.

0 + 0 = 14

0 = 14 (no solutions)

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20 minutes 60minutes ÷ 30miles = 20minutes

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Question #18: Three times as many boys as girls visited the mall in Deptford. A
romanna [79]

(boys)  x=3(y)

(girls)   y=x/3

Step-by-step explanation:

4 0
3 years ago
Identify the interval(s) on which the function y = x^2-3x-40 is positive
MakcuM [25]

Answer:

See below

Step-by-step explanation:

x^2-3x-40  Factor

(x - 8) (x + 5)

The x intercepts are -5 and 8

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3 0
2 years ago
Grace is planning on purchasing an Akai Professional MPC5000 drum machine for $2195. She's been pre-approved to finance her purc
Genrish500 [490]

1) Her monthly payment is $40.97 if she finance the total amount

2) She will pay $2458.2 for the MPC5000

3)Her monthly payment will be $26.50 if she pay her saved up money upfront

4) She will pay $2365.4 for the MPC5000

5) Yes, I recommend to pay the $775 upfront . If she pay upfront, then the amount she needs to pay for the MPC5000 is less.

Step-by-step explanation:

The cost of the drum machine is $2195

The APR is 12% over 60 months

1) the APR for 60 months is 12%

So, the APR for 1 month is

12/60 = 0.2%

The interest per month = 0.2% of 2195

= (0.2 x 2195) / 100

= 4.39

The amount to be paid per month is

= monthly amount + interest

= (2195/60) + 4.39

= 36.58 + 4.39

=$ 40.97

2) If she pays $40.97 per month then the total payment (for 60 months) for the drum machine

= 40.97 x 60

= $ 2458.2

3) the total cost is $2195 out of which she pays $775 upfront.

So she have to borrow less .

The amount to be financed is

2195- 775= $1420

The monthly interest is,

(0.2 x 1420) /100 = 2.84

Monthly she have to pay

23.66+ 2.84= $26.50

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Her monthly payment is $26.50

Then for 60 months she will pay,

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The total amount paid for the drum machine is

775+1590.4 =$2365.4

4 0
3 years ago
2x - 1 = 17...............
Alika [10]

Answer:

x = 9

Step-by-step explanation:

2x - 1 + 1 = 17 + 1

2x = 18

(2x=18)/2

x = 9

8 0
2 years ago
Read 2 more answers
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